Synthesis, spectroscopic characterization and structural studies of bromodioxodimethylsulfoxide ( N, N′-dialkyldithiocarbamates and O-alkyl dithiocarbonate)molybdenum(VI) complexes: Crystal structures of MoO 2Br 2(OSMe 2) 2 and MoO 2Br 2(C 12H 8N 2) · CH 2Cl 2

Abstract

Reactions of dibromodioxobis(dimethylsulfoxide)molybdenum(VI) with sodium/potassium salts of N, N′-dialkyl dithiocarbamates or O-alkyl dithiocarbonates in 1:1 molar ratio in dichloromethane yield bromodioxomolybdenum(VI) complexes of the type, MoO 2Br(S 2CNR 2)(OSMe 2) (R = Et, Pr n , Pr i ) or MoO 2Br(S 2COR)(OSMe 2) (R = Et, Pr n , Pr i ). These newly synthesized complexes were characterized by elemental analysis and IR, UV–Vis and 1H NMR spectroscopy. Crystals of MoO 2Br 2(OSMe 2) 2 and MoO 2Br 2(C 12H 8N 2) · CH 2Cl 2 both have distorted octahedral environments around molybdenum with two cis-oxygen atoms and two trans-bromine atoms along with two cis-dimethylsulfoxide moieties in the former and 1,10-phenanthroline in the latter.